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CSGPNasdaq SEC EDGAR

COSTAR GROUP, INC.

Services-Business Services, NEC·ARLINGTON, VA·FY end 12/31·CIK 1057352
OverviewFinancialsCompensationGovernanceInsidersFilings
Net 180d
$6.0M
6 buys / 0 sales
Open-market buys
$6.0M
6 transactions
Open-market sales
$0
0 transactions
Cluster windows
2
2 buy / 0 sell

Insider transaction timeline

2-year window · 11 buys · 16 sales · dot size = transaction value
7/2410/241/254/257/2510/251/264/26buysell
AcquisitionsSalesCluster window (≥2 sales / month)

Form 4 transactions

Showing 27 of 27
DateInsiderTypeSharesValue
2026-05-01
FLORANCE ANDREW CPresident and CEO
Buy68,330$2.4M
2026-05-01
FLORANCE ANDREW CPresident and CEO
Buy3,100$111.0K
2026-03-15
Cann Cynthia CammettChief Accounting Officer
Tax withhold1,194-$52.1K
2026-03-15
SIMURO FRANKChief Technology Officer
Tax withhold11,107-$484.6K
2026-03-15
Ruggles LisaSenior VP, Global Operations
Tax withhold2,977-$129.9K
2026-03-15
DESMARAIS MICHAEL JChief Human Resources Officer
Tax withhold2,873-$125.3K
2026-03-15
Boxer GeneGeneral Counsel and Secretary
Tax withhold428-$18.7K
2026-03-15
Boxer GeneGeneral Counsel and Secretary
Tax withhold482-$21.0K
2026-03-10
LOWN CHRISTIAN M.Chief Financial Officer
Award12,268
2026-03-10
FLORANCE ANDREW CPresident and CEO
Award124,162
2026-03-10
Boxer GeneGeneral Counsel and Secretary
Award21,920
2026-03-10
DESMARAIS MICHAEL JChief Human Resources Officer
Award17,676
2026-03-10
Cann Cynthia CammettChief Accounting Officer
Award4,374
2026-03-06
Sams Louise S
Buy1,000$48.4K
2026-03-02
Glaser Rachel C
Buy1,000$44.9K
2026-03-02
SAINT FREDERICK G.President, Marketplaces
Buy20,000$906.6K
2026-03-01
DESMARAIS MICHAEL JChief Human Resources Officer
Tax withhold6,353-$283.5K
2026-03-01
SAINT FREDERICK G.President, Marketplaces
Tax withhold11,096-$495.2K
2026-03-01
SIMURO FRANKChief Technology Officer
Tax withhold18,702-$834.7K
2026-03-01
Ruggles LisaSenior VP, Global Operations
Tax withhold8,931-$398.6K
2026-03-01
LOWN CHRISTIAN M.Chief Financial Officer
Tax withhold7,175-$320.2K
2026-03-01
Boxer GeneGeneral Counsel and Secretary
Tax withhold4,547-$202.9K
2026-03-01
FLORANCE ANDREW CPresident and CEO
Tax withhold59,593-$2.7M
2026-03-01
Cann Cynthia CammettChief Accounting Officer
Tax withhold1,385-$61.8K
2026-02-27
FLORANCE ANDREW CPresident and CEO
Buy55,720$2.5M
2026-02-19
SIMURO FRANKChief Technology Officer
Disposed30,727
2026-02-19
SIMURO FRANKChief Technology Officer
Tax withhold4,421-$216.9K